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This is a list of links to articles on software used to manage Portable Document Format (PDF) documents. The distinction between the various functions is not entirely clear-cut; for example, some viewers allow adding of annotations, signatures, etc. Some software allows redaction, removing content irreversibly for security.
Adobe Acrobat is one example of proprietary software that allows the user to annotate, highlight, and add notes to already created PDF files. One UNIX application available as free software (under the GNU General Public License) is PDFedit. The freeware Foxit Reader, available for Microsoft Windows, macOS and Linux, allows annotating documents.
Some software is in the public domain and has no restrictions on who can use it, copy or share it, or modify it; a notable example is software written by the United States Government. Free and open-source software also allow free use, sharing, and modification, perhaps with a few specified conditions. [64]
This is a list of free and open-source software (FOSS) packages, computer software licensed under free software licenses and open-source licenses. Software that fits the Free Software Definition may be more appropriately called free software; the GNU project in particular objects to their works being referred to as open-source. [1]
Microsoft is a developer of personal computer software. It is best known for its Windows operating system, the Internet Explorer and subsequent Microsoft Edge web browsers, the Microsoft Office family of productivity software plus services, and the Visual Studio IDE.
User-written software is software written by users. Typically, "user-written software" refers to add-ons to a software package written by its users, often customers of the company that sells the package. Then give examples, similar to the list currently in the article. Mention that the open-source development model can blur the distinction ...
LibreOffice (/ ˈ l iː b r ə /) [11] is a free and open-source office productivity software suite, a project of The Document Foundation (TDF). It was forked in 2010 from OpenOffice.org, an open-sourced version of the earlier StarOffice.
Utility software is a program specifically designed to help manage and tune system or application software. It is used to support the computer infrastructure - in contrast to application software , which is aimed at directly performing tasks that benefit ordinary users.